/**
 * Credentials Management Tests
 *
 * Tests for secure credential storage and retrieval
 */

import {describe, test, expect, beforeEach, afterEach} from "bun:test"
import {loadCredentials} from "../src/config/credentials"
import * as fs from "fs/promises"
import * as path from "path"
import * as os from "os"

describe("Credentials Management", () => {
  const testConfigDir = path.join(os.tmpdir(), ".mentra-test")

  beforeEach(async () => {
    // Create test directory
    try {
      await fs.mkdir(testConfigDir, {recursive: true})
    } catch {
      // Ignore if already exists
    }
  })

  afterEach(async () => {
    // Clean up test directory
    try {
      await fs.rm(testConfigDir, {recursive: true, force: true})
    } catch {
      // Ignore cleanup errors
    }
  })

  describe("saveCredentials", () => {
    test("should save credentials with token and email", async () => {
      const creds = {
        token: "test_token_123",
        email: "test@example.com",
      }

      // This test assumes the function uses OS keychain or file fallback
      // In a real test environment, we'd mock the Bun.secrets API
      expect(creds.token).toBeDefined()
      expect(creds.email).toBeDefined()
    })

    test("should handle missing token gracefully", async () => {
      const creds = {
        token: "",
        email: "test@example.com",
      }

      expect(creds.token).toBe("")
    })
  })

  describe("loadCredentials", () => {
    test("should return null when no credentials exist", async () => {
      // In a clean test environment, this should return null
      // Note: This test might fail if credentials already exist
      const creds = await loadCredentials()
      expect(creds === null || typeof creds === "object").toBe(true)
    })

    test("should load credentials if they exist", async () => {
      // This test would require setting up credentials first
      // Placeholder for integration test
      expect(true).toBe(true)
    })
  })

  describe("clearCredentials", () => {
    test("should clear credentials from storage", async () => {
      // This test would require saving credentials first, then clearing
      // Placeholder for integration test
      expect(true).toBe(true)
    })
  })

  describe("File Fallback", () => {
    test("should use file storage when OS keychain unavailable", async () => {
      // This would require mocking Bun.secrets to fail
      // Placeholder for future implementation
      expect(true).toBe(true)
    })

    test("should set correct file permissions (chmod 600)", async () => {
      // This would check that credentials.json has 0600 permissions
      // Placeholder for future implementation
      expect(true).toBe(true)
    })
  })

  describe("Environment Variable Override", () => {
    test("should use MENTRA_CLI_TOKEN when available", async () => {
      // Save original env var
      const originalToken = process.env.MENTRA_CLI_TOKEN

      // Set test token
      process.env.MENTRA_CLI_TOKEN = "env_test_token"

      // Test would verify this token is used
      expect(process.env.MENTRA_CLI_TOKEN).toBe("env_test_token")

      // Restore original
      if (originalToken) {
        process.env.MENTRA_CLI_TOKEN = originalToken
      } else {
        delete process.env.MENTRA_CLI_TOKEN
      }
    })
  })

  describe("Security", () => {
    test("should never log tokens to console", () => {
      const token = "secret_token_123"
      const safeString = token.slice(0, 8) + "..."
      expect(safeString).not.toContain("secret_token_123")
      expect(safeString).toBe("secret_t...")
    })

    test("should validate token format", () => {
      const validToken = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJlbWFpbCI6InRlc3RAZXhhbXBsZS5jb20ifQ.signature"
      const invalidToken = "not-a-jwt"

      // JWT tokens should have 3 parts separated by dots
      expect(validToken.split(".").length).toBe(3)
      expect(invalidToken.split(".").length).not.toBe(3)
    })
  })

  describe("Edge Cases", () => {
    test("should handle empty credentials", async () => {
      const emptyCreds = {token: "", email: ""}
      expect(emptyCreds.token).toBe("")
      expect(emptyCreds.email).toBe("")
    })

    test("should handle malformed credential data", async () => {
      // Test parsing of corrupted credential files
      // Placeholder for future implementation
      expect(true).toBe(true)
    })

    test("should handle concurrent access", async () => {
      // Test multiple processes trying to read/write credentials
      // Placeholder for future implementation
      expect(true).toBe(true)
    })
  })

  describe("Migration", () => {
    test("should migrate from old credential format if needed", async () => {
      // Test migration from v1 to v2 credential format
      // Placeholder for future implementation
      expect(true).toBe(true)
    })
  })
})
